>> host: booktv on c-span2 is on vacation the university of pennsylvania at philadelphia. at the school of communication and joining us is the dean michael x. delli carpini. dean, what is the school of communication? >> a freestanding school that does research for the public consumption and a scholarly work and a ph.d. training and undergraduate training the way media communications influence social, political, a health and cultural practices. >> host: we're here specifically to talk about your book "after broadcast news" if media regimes, democracy, and the new information environment."